package com.qk.management.service.impl;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.util.ObjectUtil;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.qk.common.PageResult;
import com.qk.common.enums.ParamEnum;
import com.qk.common.exception.CommonException;
import com.qk.common.util.JwtUtil;
import com.qk.domain.user.UserDO;
import com.qk.dto.user.UserDTO;
import com.qk.dto.user.UserLoginDTO;
import com.qk.entity.Role;
import com.qk.entity.User;
import com.qk.management.mapper.RoleMapper;
import com.qk.management.mapper.UserMapper;
import com.qk.management.service.UserService;
import com.qk.vo.user.UserLoginVO;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;

/**
 * @Author: chouh
 * @DateTime: 2025/10/7 21:04
 * @Description:
 */

@Service
@SuppressWarnings("all")
public class UserServiceImpl implements UserService {

    private static final String DEFAULT_PASSWORD_SUFFIX = "123";

    private static final Integer USER_STATUS_UNNORMAL = 0;

    @Autowired
    private UserMapper userMapper;

    @Autowired
    private RoleMapper roleMapper;

    @Override
    public UserLoginVO login(UserLoginDTO dto) {
        boolean hasNull = BeanUtil.hasNullField(dto);
        if (hasNull){
            CommonException.throwCommonException(ParamEnum.PARAM_ERROR);
        }
        User dbUser = userMapper.selectByUsername(dto.getUsername());
        if(Objects.isNull(dbUser)){
            CommonException.throwCommonException(ParamEnum.LOGIN_USERNAME_ERROR);
        }
        if(ObjectUtil.equal(USER_STATUS_UNNORMAL, dbUser.getStatus())){
            CommonException.throwCommonException(ParamEnum.LOGIN_USER_STATUS_ERROR);
        }
        String userPassword = DigestUtils.md5DigestAsHex(dto.getPassword().getBytes());
        String encodedPassword = dbUser.getPassword();
        boolean isChecked = ObjectUtil.equal(userPassword, encodedPassword);
        if (!isChecked){
            CommonException.throwCommonException(ParamEnum.LOGIN_PASSWORD_ERROR);
        }
        Role role = roleMapper.selectById(dbUser.getRoleId());

        Map<String, Object> claims = new HashMap<>();
        claims.put("id", dbUser.getId());
        claims.put("username", dbUser.getUsername());

        return UserLoginVO.builder()
                .id(dbUser.getId())
                .username(dbUser.getUsername())
                .name(dbUser.getName())
                .image(dbUser.getImage())
                .roleLabel(role.getLabel())
                .token(JwtUtil.generateToken(claims))
                .build();
    }

    @Override
    public List<User> queryAllUsers() {
        return userMapper.queryAllUsers();
    }

    @Override
    public void updateUser(User user) {
        user.setUpdateTime(LocalDateTime.now());
        userMapper.updateUser(user);
    }

    @Override
    public UserDO queryUserById(Integer id) {
        if (Objects.isNull(id)){
            CommonException.throwCommonException(ParamEnum.PARAM_ERROR);
        }
        return userMapper.queryUserById(id);
    }

    @Override
    public void deleteUsers(List<Integer> ids) {
        userMapper.deleteUsers(ids);
    }

    @Override
    public void addUser(User user) {
        boolean hasNull = BeanUtil.hasNullField(user, "id", "password", "roleId", "deptId", "image", "remark", "createTime", "updateTime");
        if (hasNull){
            CommonException.throwCommonException(ParamEnum.PARAM_ERROR);
        }
        user.setCreateTime(LocalDateTime.now());
        user.setUpdateTime(LocalDateTime.now());
        String rawPassword = user.getUsername() + DEFAULT_PASSWORD_SUFFIX;
        String encodedPassword = DigestUtils.md5DigestAsHex(rawPassword.getBytes());
        user.setPassword(encodedPassword);
        userMapper.insertUser(user);
    }

    @Override
    public PageResult<UserDO> getUsers(UserDTO userDTO) {
        PageHelper.startPage(userDTO.getPage(), userDTO.getPageSize());
        List<UserDO> users = userMapper.selectByPage(userDTO);
        Page<UserDO> pageInfo = (Page<UserDO>) users;
        return PageResult.<UserDO>builder().total(Long.valueOf(pageInfo.getTotal()).intValue()).rows(pageInfo.getResult()).build();
    }

}
